Rotary-valve gas-engine.



J` W. NANCE. ROTARY VALVE GAS ENGINE. nPPLlcmoN m50 rss. 21. 911.

Patented May 28, 1918.

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J. W. NANCE.

ROTARY VALVE GAS ENGINE.

APPucATloN FILED 558.21.1917.

Paened May 28,1918,

2 SHEETS-SHEET 2.

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JAMES W'. NNCE, OF FILER, IDAHO, ASSIGNOR T0 FRANKLIN GAS TURBINE COMPANY, OE PHOENIX, ARIZONA.

ROTARY-VALVE GAS-ENGINE.

i ,scarsa Application lled February 27, 191'?.

To all whom t may concern:

Be it known that IQ, JAMES W. NANCn, av citizen of the United States, residing at Filer, in the county of rlwin Falls and State of idaho, have invented certain new and useful Improvements in Rotary-Valve Gas-Err gines, of which the following is a specitication.

My invention relates to new and useful improvements in internal combustion engines and more particularly to engines of the rotary sleeve valve type, the primary ob ject of my invention being the provision oi an engine having gas tight cylinders which will, have fewer movable parts and, c0nsefluently, less 'friction and which may be man uiaetured at low cost.

A still further object of my invent-ion is to so arrange and construct the moving parts as to do away, to a great extent, with vibration and consequent wear and to render the engine practically noiseless, except for the exhaust which, or" course7 may be quicted by employment ot' a suitable muffler.

Another object of my invention consists in constructing anv engine in which the rotating sleeve valve has a closed head which engages against the inner tace of the cylinder head and which is formed with a single port sei-ving both as an intalre and an exhaust port and through which the firing also occurs from a Spark plug mounted in the cylinder head in position to lie-exposed through the port atthe proper time.

ln this connection, a still further object ot my invention consists in the provision of a novel and eiiicient form of packing ring about the port of the sleeve valve to prevent escape of gases during operation of the engine. v

Another object which l have in view is the provision of novelA supporting bearings for the revolving sleeve valve which are adjustable and which will support and hold the valve with its walls spaced from the walls of the cylinder so that a suiiicient film ot' oil may be constantly maintained and circulated between the bearing surfaces to effectively oil the parts and prevent wear.

Another object which l have in View is the arrangement of a novel form of drive mechanism between the crank shaft f the engine and the sleeve valves which is S'mple, economical and durable.

Specification ot' Letters Patent.

Patented May 28, li.

Serial No. 11,324.

`With these and other objects in View, my invention will be more full described, illustrated in the accompanying drawings, and then specifically pointed out in the claims which areattached to and form a part of this application. i

In the drawings:

Figure l is a central, longitudinal 'sectional view of a four-cylinder engine constructed in accordance with my invention, one of the sleeve valves being shown in section and the remainder in elevation;

Fig. 2 is a top plan view of the engine lshown in Fig. 1,'the sleeve valve ports being indicated in dotted lines to illustrate the eperation of the engine;

F 3 is a transverse sectional view taken on the line 3--3 of Fig. E2, showing lhe inanner in which an explosive charge in a cylinder is fired;

ig. 4 is a fragmentary plan view of the head of a sleeve valve, showing the packing ring in place; i i

Fig. 5` is a sectional view taken on the line- 5-5 of Fig. e. y

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

In order to insure a clear and exact under-l standing of my invention and its manner mey operation, I have illustrated it as embodie/il in a ourcylinder, four-cycle internal combustion engine, although it'will be readily apparent that an engine of one, two, four or six or more cylinders may be constructed along the same lines. rIhe engine body includes an upper casting 10 and crank vcase ll, the two. having mating {ianges 12 apertured to receive clamping bolts 13 and the abutting edges of the two being formed at their ends with bearings 14C to journal the usual crank shaft 15. The crank case 11 is preferably formed with a removable bottoni 16 to permit access to the various wrist pin and connecting rod bearings. The upper casting comprises the cylinders of the enf gine which are cast en U00 and which, about their upper ends, are provided with a water jacketing 17 having the inlet pipe 18 and outlet pipe 19. For the salse ot convenience, the cylinders are desi ated by the letters A.,

i B. C and D. The cylinder heads are formed by a single casting 1.9'l which isy Secured by npomy by 53h ter Qgag. sails. @l

t. p in m 'the i rin @L the ssews 1de C01 as a whole semis@ in the Gu and which @l Cynn'def n vave 1s fome m its @niet face C respect fao im th pm exten ire n compmmf ner ower fompw,

thc packing rings ncntl nnt lit with :any eX- trcnic tlg'htncss :is thcir cnnipnnnnt pzirts will hc cxpnntlctl nti times ni' pi'cnsnrc inv thc pcr ring is, therefore, selgrintling :intl thc packing ring its n whnlc nntnninticnlly :nlnpts itsclf to tithe np wear.

'l`hc npcz'ntion 0i thc nhm'c lcstzi'ihctl cnginc will hc rcsnlily untlci'stnml h v rct'crvncc tt Figs. l :intl 2 nt' thc th'nwing, partit-nlm' :ltt-cntinn licinbr pnhl to thcrv tliicclifm nl' inmcnnnt nt' thc parta'. :is intlicntctl hy thc nrt-uws. s thcrc Vshown` cylintlcrisnt thc hcginning nt' thc cxhnnnt sti'olw, cj'lintlci' ll is :it thc hcg'inning nl thc intnltc Qi'nhc. cylinilci' is :it thc hnginning' nl' thc firing;` l trnl c `:intl c'vlintlci' l) isnit thc bct'inning nl thc t'mnpigcsfinn sti-wlw. lnth thc lrnwing' in nl' thc cxiilnsirc gnscs nnil thc t.\:- hnnt ing nly hnrnt grlscs. :is wcll nS thc firing' nl' thc cninprcswtl gnscs. tnkcs pli-icc through tlnl ninggjln port Ill) nl' thc slctwc vnlvc. :intl :iniV cscnlw nl' gas is. :it :ill tinws. prctcntml hy thc cnniimnntl pncliingg ring. linnv'ninch n thc twisting lJ nniy hc r'cznlily icnlm'cd, it will hc clcni' thnt thc packing rings n'niv hc i'clilncctl :is thny incnnic, worn. withotit- :my tnlting' lnwn nl7 thc engine :is zrwhole.

lthnnggh l hnvc illnst-xntctl :intl described niy inwntinn in nl! its: tlctiiils nl constructiwn. it will ni mnrsc hc understood that i'tncrw thc` right tn nmke any changes, within thcscnpc nl' thc nppcntlcd clitin'iS. withnnt in thc l li`n'litc5tdegree departing 'from thc -wirit nt' niv invention.

llnrinn' thnx tlcscrihctl the wlmi is clninicil :is new is:

l. ln :in intcrniil combustion engine. n c rlintlcr lnivinfr n hmnl tnrnicd with spaced inlct nnil ontlct. pmt# nntl with a Spnrxplng rccciting nptning siincctl from thu port. thc, pnrtl :intl ripcningj lining cqnnlly Spztcccli l'i-nni thc ccni'cinl' thc c x'lintlcr hond. n. sltww \'nl\'iy intntnhlv nitinntcil in thccylintlci ninl haring :i hcnrl tnrnictl with :i port nlniitctl tn snccnssiicly rcgintlnr with the inlct ptn't. spnrk ping' inciting nini @Xhnnst imm nl thil c if'linthr hcinl. :intl n packing Vini;r A nr1tn1ntling thc ptnt, in tho Valve hcntl :intl uitging-,ing thc c vlintlcr hcntl, Snitl pnclinvention,

in;V ring inchnling' :i Split resilient ring' haring its nplicr i'ncc hcvclwl. scntctl in n t-hnnncl l'nrnictl in thc inli'c head nml coninninicntiir;r with the port. :incl n, Set-(nifl ring hnvinjg itS lnwci' lince ln'-,\'clctl engaging ninin thc lii'st whei'chy ilV will be fmcctl t0- wnrtl thc cilinflcr hcntl hy rnflinl eximnsion nl ihn tint ring. tlnc tn intcinnil prcSSnr I'rnin thc port.

2. in :in intcinnl cninhnstinn engine, ay cylinilcr linring :t Wirt. n lnm'nhlc vulve nicnilwr hnrinjg n ptn't :nlnptml in n tci'tnin iinsitinn tu rccisici with thc pmt of the c\'lin lci. .will nicnihcr in thnt, ilaitrc :nlvizicent thc .fylintlcr lining loiinctl with :in annular chnnncl cncirclingA itf pfn't :intl lmving' that p'nitinn hctwccn thc clmnntl :intl portV nur tinll",v cntniwny tn csltnhlinh cnnnnnnicntnni lwtwccn thc pnrt' :intl clninncl7 und incarna tlisimsctl in thc t-lntnni-l nntl. conseqncn'tly., snhjcctctl tn :my inwsnrc nt' gzincs itgziintit tht mirc nitinxhci, will sncnnfwA being Snc-h thnt snch prcssnrc will cxpnntl'it into close tfngnigcnicnt with thc cylinder.

I. ln :in intcrnnl t-nnihnstion engine, :i cylintlcr hnrinn' n port. :i nnn'nhle Vnl'vc. incinhnr hnx'ing n imi-t :nlnptctl in Unc, pfisition nl' thc incnihcr tu i'cgistcr with thc. cylinder imi-t'. .nich nicnihcr in that i'zice ntijaccnt the cjflintlcr hcing lminctl with :in nnnnlar chainncl yni-i'tnnnling.; thc port intl having that nin-tion hctwcnn thcA channel and port; pariinllY cnt-nwnjy in establish communication tlitlrchctwccn. n split rcfwilicntring Seated in thc chiinncl with its upper i'nce beveled tlnwnwnrtll): nntl nntwnrtlly :intl inner tin-c snhjcct to :my pressure of gasps against, thc vnlvc nimnhnr, und :i Second ring Seated on thc first. with its lower ffice beveled up w-.lrtlly :intl inwnrtllj: whereby radial expanlsinn in the split: ring will force the Secund ring into cion@ engagement, with the Cylintiler.

i. in nn intcrnnl combustion Qngine, :i cylinder having n cj/ilinifler hand ori'ncd Cen` trnlly with :in opening, the opposite and oi' thc cylinder being' conntcrborefl :intl interq nulli.' threaded. L sleeve valve mounted in the `c y'linclcr and having ti trnnnion extentiing through the openinf.;f in the Cylintler head, a. bushing -sLn-rmunlingl the trunnion :intl seating in the opening, :i bearing ring threaded in the counterhored end of the cylinder. a second ring niountctl in thc. counterborecl enflni the cylindera hall hearings interposed hetwcfcn 'the rings, and :i flange formed on the tower enti of the Slcnfn valve unil viigaging the second "ring,

5. In :in intcrnnl conihnstinn engine, i cylinflar han itig :t cylinder head fm'nictt with n contrai, npening.) ti bnn-hing in the opening, :i shfc'fc -ifnljfc rotatably ninnntcti in the, cylinder :intl having ai head (engaging the cylintlcr heini, i trnnnion carried by th: head of the vnlte unil extending through the 0pt-,ning 0i the cylintlcr hcnd, :in annular flange upon the lnwer unil nf the slccvn vulve. thg c ylinclci in; its lower @ntl being cnnntcrhnrcil to prnviile with the sleeve "-fzilve :intl flung@ :in tinnnhtr chamber :ihow the V flange, anni n bearing iidjustably nimmtctl in the chnmher. l

t3. in an internal combustion engine, n cyi int'lcr haring u cylinder nenti forninfl with ai. central opening, ii bushing in thc ripening, :i sleeve-valve rotatably mounted in the cyl indi-sr and having a head engaging the cyl intim* heini, n trunninn carried by tha henri oi th@t valve and extending through opcning of 'the cylinder head :in annular 

